[PATCH 4/6] arm64: mm: Drop the lowmem watermark check from virt_addr_valid()

Catalin Marinas catalin.marinas at arm.com
Fri Nov 15 08:39:49 EST 2013

On Thu, Nov 14, 2013 at 07:37:44PM +0000, Santosh Shilimkar wrote:
> Slab allocator can allocate memory beyond the lowmem watermark
> which can lead to false failure of virt_addr_valid().
> So drop the check. The issue was seen with percpu_alloc()
> in KVM code which was allocating memory beyond lowmem watermark.
> Am not completly sure whether this is the right fix and if it could
> impact any other user of virt_addr_valid(). Without this fix as
> pointed out the KVM init was failing in my testing.

Do you have a problem on arm64? There is no lowmem watermark here.


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